also, *please* upgrade to the latest 0.8 release.
Cheers
-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com
On 21/01/2012, at 4:31 PM, Maxim Potekhin wrote:
> Did you run repairs withing GC_GRACE all the time?
>
>
>
> On 1/20/2012 3:42 AM, Shammi Jayasinghe wrote:
>>
>> Hi,
>> I am experiencing a delay in delete operations in cassandra. Its as
>> follows. I am running a thread which contains following three steps.
>>
>> Step 01: Read data from column family "foo" [1]
>> Step 02: Process received data eg: bar1,bar2,bar3,bar4,bar5
>> Step 03: Remove those processed data from "foo".[2]
>>
>> The problem occurs when this thread is invoked for the second time.
>> In that step , it returns some of data that i already deleted in the third
>> step of the previous cycle.
>>
>> Eg: it returns bar2,bar3,bar4,bar5
>>
>> It seems though i called the remove operation as follows [2], it takes time
>> to replicate it to
>> the file system. If i make a thread sleep of 5 secs between the thread
>> cycles, it does not
>> give me any data that i deleted in the third step.
>>
>> [1] . SliceQuery<String, String, byte[]> sliceQuery =
>> HFactory.createSliceQuery(keyspace, stringSerializer,
>> stringSerializer, bs);
>> sliceQuery.setKey(queueName);
>> sliceQuery.setRange("", "", false, messageCount);
>> sliceQuery.setColumnFamily(USER_QUEUES_COLUMN_FAMILY);
>>
>> [2]. Mutator<String> mutator = HFactory.createMutator(keyspace,
>> stringSerializer);
>> mutator.addDeletion(queueName, USER_QUEUES_COLUMN_FAMILY, messageId,
>> stringSerializer);
>> mutator.execute();
>>
>>
>>
>> Is there a solution for this.
>>
>> Cassadra version : 0.8.0
>> Libthrift version : 0.6.1
>>
>>
>> Thanks
>> Shammi
>> --
>> Best Regards,
>>
>> Shammi Jayasinghe
>> Senior Software Engineer; WSO2, Inc.; http://wso2.com,
>> mobile: +94 71 4493085
>>
>>
>
